Pearl-button-drill sharpener.



P. F. DUSHA & A. FEYK.

PEARL BUTTON DRILL SHARPENEH.

APPLICATION FILED JUNE 28.1916

1 ,QUfifi 1 8. Patented Nov. 28, 1916.

2 SHEETS-SHEET 2.

WITNESSES INVENTORS 7 EL'ZW'SM 115 1"; "W ALZQWA: V,

AONEYS "time earns arnnr onion PAUL F. DUSI-IA AND ANTON FEYK, OF NEWYORK N. Y., ASSIGNORS T0 HOLUB-DUSHA. COMPANY, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

PEARL-BUTTON-DBILL SHARPENER.

Specification of Letters Patent.

Patented Nov. 26, 1916.

Application filed June 28, 1916. Serial No. 106,356.

To all whom it may concern:

Be it known that We, PAUL F. DUSHA and ANTON FnYK, citizens of theUnited States, and residents of the city of New York, borough ofManhattan, in the county and State of New York, have invented a new andImproved Pearl-Button-Drill Sharpener, of which the following is a full,clear, and we act description.

This invention relates to a pearl button drilling machine, and moreparticularly 130 means for automatically grinding the drills withoutrequiring them to be taken from the machine or without requiring themachlne to be stopped.

The invention has for its general objects to improve the constructionand operation of drilling machines so as to be reliable and eflicient inuse and so designed as to have a large capacity, since the drills can bemaintained in their best cutting condition for an indefinite length oftime.

A more specific object of the invention is.

the provision of a drilling machine of that type embodying a rotarycarrier having a plurality of drill-carrying chucks such as disclosed inUnited States Letters Patent 816,550, granted to L. W. Holub March 27,1906, and in combination therewith the present invention contemplates aplurality of drill spindles mounted on a carrier rotatable at the samespeed as the chuck carrier, and arranged in the path of the drills is agrinding device for grinding or beveling'the op posite sides of eachdrill-once during each revolution of the drill spindle carrier.

A further object of the invention is the provision of means for aliningthe drills to bring their beveled surfaces into proper re-- lation withthe grinding wheels, whereby the drills can be sharpened with a minimumwaste of stock.

With such objects in View, and others which will appear as thedescription proceeds, the inventioncomprises various novel features ofconstruction and arrangement of parts which will beset forth withparticularity inthe following description. and,

claims appended hereto.

In the accompanying drawings, which illustrate one embodiment of theinvention and wherein similar characters of reference indicatecorresponding parts in all the views, Figure l is a side view of theupper portion o a P l u t drilli m c in B s is a plan view thereof; Fig.3 is an upper view of the grinding disks and the relation thereof to thepath of the drills; Figs. 1- and 5 are detail views showing the mannerin which the drills are beveled; Fig. 6 is a diagrammatic view showingthe path of the drill with respect to the grinding surfaces whereby thecutting edge of the drill is ground oblique to its axis; and Figs. 7 and8 are different views of the ground drill.

Referring to the drawing, A designates the button blank chuck section ofthe machine, the same being substantially the same as the constructionshown in the patent heretofore referred to. Briefly this section of themachine comprises a rotary carrier 1 rotated at a speed convenient forthe button blanks to be supplied successively t0 the chucks 2, thespindles of which rotate in bearings 3 in the carrier 1, and on the spindles are pulleys l, certain of which are simultaneously driven by anendless belt 5 engaging with the pulleys.

The means for rotating the carrier 1 is not shown, as it forms no partof the present invention, but it is to be understood that, as thecarrier rotates, certain of the buttoncarrying chucks will rotate ontheir own axes by reason of the driving belt 5 engaging the pulleys 4,and certain of the spindles will be idle as far as individual rotationis concerned, butthey will revolve with the carrier 1, which is incontinuous rotation. It is necessary that certain of the chucks be idleso as to permit the button blanks to be placed in ,or dischargedtherefrom.

The drill spindle section B comprises a carrier formed of upper andlower disks 6 and-7 connected bya central'hub 8 which rotates with asuitably driven upright shaft 9 which passes through the centralstandard 10. The carrier has a plurality of. vertical spindleslljournaled in the disks 6 and 7, and on the lower end of each spindleis a chuck 12 that holds a drill 13, there being as many drills as thereare button-carrying chucks. .and these drills andchucks are in verticalalinement. The drill spindle carrier rotates at the same speed as thebutton chuck carrier, and the drill spindles are driven by a belt 1%which is looped around the carrier and engages pulleys 15 on thespindles 11. As shown in Fig. 3, there are twelve spindles and seven ofthem are operative at a time, since the belt 14: is in engagement withseven of the pulleys 15. The other five drill spindles are idle,corresponding to the five idle button blank-carrying chucks. Thegrinding of the drill takes place during the travel of the idle drillspast a suitable grinding device C. This grinding device comprises a pairof wheels 16 and 17 mounted on a common arbor 18 and rotated asa unit.These wheels have their opposed faces formed of bevels l6 and 17respectively, for the purpose of beveling the drills. The arbor 18 ismounted in a suitably supported bearing 19 and it is provided with apulley 20 so as to be driven by a belt or equivalent means. The grindingwheels are continuously rotated at a comparatively high speed and eachdrill 13 passes between the grind ing wheels engaging first the surface17 and then the Surface 16, the path of the drill between the wheelsbeing indicated by thedottedline, Fig. 8. The axis on which the grindingwheels rotate if prolonged would pass close to but at one side of thecenter of the drill chuck carrier, and the plane of the grinding wheelsis at a slight angle to a tangential line drawn with respect to thecircular path of the drills. By

reference to Fig. 6 it will be observed that the drill also travels in aline 00 y which is a chord with respect to the grinding wheels, and byreason of this, in addition to the travel of the drill in a path obliqueto the plane of the grinding wheels, the opposite sides of the drillwill be so ground that the [faces (land d will meet in a sharp edge 61which is oblique to the axis of the drill, which has a decided advantagein drilling pearl buttons.

A steadying device or rest is employed to hold the drill from turningwhen it is being ground or sharpened, such steadying device being intheform of a finger 21 mounted on a pivot 22 which is fastened on astationary plate 23 at the top of the machine. Each drill spindle 11 hason its upper end a mutilated pinion 24: formed with a flat surface 25and this flat surface is adapted to bear against the flat surface 26 onthe finger 21, whereby the drill being ground will be kept positivelyfrom turning, while being acted on successively by the wheels 17 and 16.The finger 21 is yieldingly urged against the pinion 2% by a spring'27which is connected with an arm 28 fastened to the hub 21. In order toproperly aline the drills as they approach the grinding wheels,

an aliningdevice in the form of a finger 29 is employed, this fingerhaving rack teeth 30 with which the teeth on the pinions 24 successivelyengage to thereby cause the drill spindle to be turned until the flatface 25 of the pinion is parallel with the toothed surface 30. The flatsurface 25 rides on the toothed surface 30 untilitmeets and passes tothe finger 21 and is steadied thereby; The

finger 29 is mounted on a pivot 31 parallel to the pivot 22 and has anarm 32 which is connected with the spring 27, which tends to draw thearms 28 and 32 together and to throw the members 21 and 29 into the pathof the pinions The tip of the finger 21 is kept out of the path of thepinion which is riding off the finger 29 by means of a beveled surfaceor shoulder 33 on an intermediate portion of the linger 21 and dis posedat an angle to the surface 26. The fiat surface of the pinion 2st on thespindle, the drill of which has just been ground, throws the finger 21to one side, and when the pinion 2% on the spindle, the drill of whichis just approaching the grinding wheel, passes out of engagement withthe finger 29, the preceding pinion disen 'ages the shoulder 33 andallows the surface 26 on the finger 21 to engage the surface of the nextpinion. lVhen the pinion 21 disengages the finger 29 and is engaged bythe finger 21, the succeeding pinion 21- will mesh with the rack teeth30, and the spindle thereof will be rotated to bring the drill intoproper alinement. In this manner the drills are successively sharpenedintermediate the periods when the blanks are drilled. While theinvention is shown in connection with a drilling machine, it is to beunderstood that it can be applied to other machines where tools cut orfinish the faces of button blanks by the employment of a plurality ofbutton chucks, and tools mounted on moving carriers after the principleherein disclosed.

From the foregoing description taken in connection with the accompanyingdrawing, the advantages of the construction and method of operation willbe readily understood by those skilled in the art to which the inventionappertains, and while we have described the principle of operation,together with the device which we now consider to be the best embodimentthereof, we desire to have it understood that the device shown is merelyillustrative and that such changes may be made when desired as fallwithin the scope of the appended claims.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent:

1. A pearl button working machine 'comprising a rotary carrier having aplurality of rotatable button chuck spindles, a second rotary carrierhaving a plurality of rotary tool-carrving spindles, and a grindingdevice disposed in the path of the tool-carrying spindles andconstructed to operate successively on opposite sides of each tool forproducing oppositely disposed bevels thereon.

2. In a machine of the class described, the combination of a rotatablecarrier, tool holders mounted thereon, and a rotary grinder havingspaced oppositely disposed beveled surfaces with which each toolsuccessively engages for producing opposite bevels on the tools.

3. A machine of the class described comprising a rotatable carrier, arotatable t00lcarrying spindle, and a grinding device disposed in thepath of a tool in the spindle. said grinding device comprising spacedoppositely disposed beveled surfaces with which the tool successivelyengages to produce opposite bevels on opposite sides.

-l. In a machine of the class described, the combination of a rotatablecarrier, a spindle rotatably mounted on the carrier at a point eccentricto the axis thereof, a toolcarrying chuck on the spindle, and arelatively fixed grinding devic including spaced rotating beveledsurfaces disposed at a slight angle to the path of the tool for'caus ingone surface to engage one side of the tool and then the other surfacethe other side of the tool for producing opposite bevels.

A machine of the class described including a revolving tool spindlecarrier, a rela tively stationary grinding device, spindles on thecarrier traveling across the grinding device, and relatively stationarymeans acting on each spindle for moving each spindle to a predeterminedposition as it crosses the grinding device.

6. A machine of the class described including a revolving tool spindlecarrier, a relatively stationary grinding device, spindles on thecarrier traveling across the grinding device, and relatively stationarymeans acting on each spindle for moving each spindle to a predeterminedposition as it crosses the grinding device, said means including apinion having a flat side on each spindle, a spring-pressedtoothedmember with which each pinion engages, and a springpressed member withwhich the flat side of each pinion engages to prevent the spindles fromturning as the tools are acted on by the grinding device.

7. A machine of the class described including a revolving tool spindlecarrier, a relatively stationary grinding device, spindles on thecarrier traveling across the grinding device, and relatively stationarytfopies of this patent may be obtained for five cents each, byaddressing the Washington, D. (3.

means acting on each spindle for moving each spindle to a predeterminedposition as it crosses the grinding device, said means including apinion having a flat side on each spindle, a spring-pressed toothedmember with which each pinion engages, and a spring-pressed member withwhich the fiat side of each pinion engages to prevent the spindles fromturning as the tools are acted on by the grinding device, saidlast-mentioned member having an inclined surface with which the flatside of each pinion engages after the spindles pass the grinding deviceto throw the last-mentioned member but of the path of the pinion on thespindle moving into operative relation with the grinding device.

8. A machine of the class described in cluding a revolving tool spindlecarrier, a relatively stationary grinding device, spindles on thecarrier traveling across the grinding device, and relatively stationarymeans acting on each spindle for moving each spindle to a predeterminedposition as it crosses the grinding device, said means including apinion having a flat side on each spindle, a spring-pressed toothedmember with which each pinion engages, a springpressed member with whichthe fiat side of each pinion engages to prevent the spindles fromturning as the tools are acted on by the grinding device, saidlast-mentioned member having an inclined surface with which the flatside of each pinion engages after the spindles pass the grinding deviceto throw the last-mentioned member out of the path of the pinion on thespindle moving into operative relation with the grinding device, and acommon spring acting on the members to hold them in the path of thepinions.

9. The combination of a rotary grinding element having oppositelydisposed beveled surfaces, and means for supporting and moving a drillto move in a chordal line with respect to the said surfaces and obliqueto the plane of rotation of said element, whereby the drill is ground onopposite sides with a sharp edge oblique to the axis of the drill.

PAUL F. DTTQHA. ANTON FEYK.

Commissioner of Patents,

